title: Isolated cervical lymph node sarcoidosis presenting in an asymptomatic neck mass: a case report.
abstract: Sarcoidosis, a systemic granulomatous disease of unknown etiology. The presentation of sarcoidal granuloma in neck nodes without typical manifestations of systemic sarcoidosis is difficult to diagnose. We describe the case of a 37-year-old woman with an increasing mass on the right side of neck. The excisional biopsy from the neck mass showed noncaseating epithelioid cell granuloma of the lymph nodes. No evidence of mycobacterial or fungal infection was noted. Thoracic evaluations did not show enlargement of mediastinal lymph nodes or parenchymal abnormalities. Immunohistochemistry showed abundant expression of tumor necrosis factor-α in the granuloma. However, transforming growth factor-β was not expressed, although interleukin-1β was focally expressed. These immunohistochemical findings supported characterization of the granuloma and the diagnosis of sarcoidosis. Sarcoidosis can present with cervical lymph node enlargement without mediastinal or lung abnormality. Immunohistochemistry may support the diagnosis of sarcoidosis and characterization of granuloma.
authors.affiliation: Department of Internal Medicine, Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
authors.forename: Yong Shik
authors.initials: YS
authors.lastname: Kwon
authors.forename: Hye In
authors.initials: HI
authors.lastname: Jung
authors.forename: Hyun Jung
authors.initials: HJ
authors.lastname: Kim
authors.forename: Jin Wook
authors.initials: JW
authors.lastname: Lee
authors.forename: Won-Il
authors.initials: WI
authors.lastname: Choi
authors.forename: Jin Young
authors.initials: JY
authors.lastname: Kim
authors.forename: Byung Hak
authors.initials: BH
authors.lastname: Rho
authors.forename: Hye Won
authors.initials: HW
authors.lastname: Lee
authors.forename: Kun Young
authors.initials: KY
authors.lastname: Kwon
keywords: Immunohistochemistry; Lymphatic Diseases; Neck; Sarcoidosis